It's the AFM system that…
It's the AFM system that causes all the conundrum. I have a 2022 with an 8 speed and I started noticing odd behavior by the transmission after 10,000 miles. I added lube guard additive for GM 6 speed and eight speed. I drive my truck mostly in L7 within the city on local drives to drive it without auto start and stop and it shuts down the AFM system.
This has helped the transmission quite a bit and I am not at a threat of having lifter failures in the engine. Please ensure you have optimum fluid level in your transmission and also verify what kind of fluid has the dealership used in your transmission? Mobile one or amsoil is the best